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Pharmacosiderite

#65638
SOLD
Pharmacosiderite from Wheal Gorland, St. Day dist., Cornwall, England - 65638
Pharmacosiderite from Wheal Gorland, St. Day dist., Cornwall, England - 65638

Pharmacosiderite

#65638
Availability
Sold
Size
3 x 1.5 x 2 cm - Thumbnail 
Formula
KFe3+4(AsO4)3(OH)4·6-7H2O (RRUFF)
Locality
Wheal Gorland, St. Day dist., Cornwall, England
Tagged
arsenate

Excellent cubic, grass green crystals from this famous Cornish locality.

Pharmacosiderite

Formula
KFe3+4(AsO4)3(OH)4·6-7H2O 
Crystal System
Isometric 
Crystal Habit
Blocky, Crystalline - Coarse, Earthy 
Cleavage
Indistinct, None, None 
Luster
Adamantine - Resinous 
Color
olive green, emerald green, reddish brown, yellowish brown, honey yellow 
Streak
yellowish green 
Class
Isometric - Hextetrahedral 
Fracture
Brittle - Sectile 
Hardness
2.5 

Data courtesy of Webmineral.

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